65-39=26 so 26 employess dont have cellular phones. So 26/65 or in simplified form 2/5
They are essentially asking us to solve:

Solving this equation for x tells us that it will take around 80.1 years for the materials in the vault to reduce to 357 pounds.
Answer:
[2,6]
Step-by-step explanation:
3x+5y=36
5x-4=y
3x+5(5x-4)=36
3x+25x-20=36
28x-20=36
28x=56
x=2
5x-4=y
5*2-4=y
10-4=y
6=y
Answer:1+5x44+x55555,0=9999999999999999999
Step-by-step explanation: